Power generator system

1. A power generator system comprising a first generator and a second generator mutually connected in parallel, the first generator and the second generator including engines and inverter circuits and being driven by the engines, respectively, the power generator system comprising: a detector configured to detect any of a power, a remaining fuel and a noise of the first generator, or to detect a physical quantity correlated any of the power, the remaining fuel and the noise of the first generator; a determinator configured to determine whether a parallel operation of the first generator and the second generator is necessary based on a detection value detected by the detector when the first generator is operating and the second generator remains unstarted; a power supply unit configured to supply a starting power to the second generator to start the second generator when it is determined by the determinator that the parallel operation is necessary; a generator controller configured to control the second generator so as to operate synchronously in parallel with the first generator after the second generator is started; and a total power acquisition unit configured to acquire a total power of the first generator and the second generator, wherein the detector includes a power detector configured to detect a power of the first generator, the determinator determines that the parallel operation is necessary when the power detected by the power detector reaches or exceeds a predetermined value, and after the power detected by the power detector reaches or exceeds the predetermined value and the second generator is started, the generator controller stops an operation of the second generator when the total power acquired by the total power acquisition unit falls to or below a predetermined total value lower than the predetermined value.

2. A power generator system comprising a first generator and a second generator mutually connected in parallel, the first generator and the second generator including engines and inverter circuits and being driven by the engines, respectively, the power generator system comprising: a detector configured to detect any of a power, a remaining fuel and a noise of the first generator, or to detect a physical quantity correlated any of the power, the remaining fuel and the noise of the first generator; a determinator configured to determine whether a parallel operation of the first generator and the second generator is necessary based on a detection value detected by the detector when the first generator is operating and the second generator remains unstarted; a power supply unit configured to supply a starting power to the second generator to start the second generator when it is determined by the determinator that the parallel operation is necessary; and a generator controller configured to control the second generator so as to operate synchronously in parallel with the first generator after the second generator is started, wherein the detector includes a remaining fuel detector configured to detect a remaining fuel of the first generator, and the determinator determines that the parallel operation is necessary when the remaining fuel detected by the remaining fuel detector becomes equal to or less than a predetermined value.

3. A power generator system comprising a first generator and a second generator mutually connected in parallel, the first generator and the second generator including engines and inverter circuits and being driven by the engines, respectively, the power generator system comprising: a detector configured to detect any of a power, a remaining fuel and a noise of the first generator, or to detect a physical quantity correlated any of the power, the remaining fuel and the noise of the first generator; a determinator configured to determine whether a parallel operation of the first generator and the second generator is necessary based on a detection value detected by the detector when the first generator is operating and the second generator remains unstarted; a power supply unit configured to supply a starting power to the second generator to start the second generator when it is determined by the determinator that the parallel operation is necessary; and a generator controller configured to control the second generator so as to operate synchronously in parallel with the first generator after the second generator is started, wherein the detector includes a noise detector configured to detect the noise or the physical quantity correlated to the noise of the first generator, and the determinator determines that parallel operation is necessary when a detection value detected by the noise detector reaches or exceeds a predetermined value.

4. The power generator system according to claim 1 , further comprising: a parallel operation box including an electrical circuit configured to interconnect the first generator and the second generator so that the parallel operation of the first generator and the second generator is implemented.